Kôichi Hayashi

11.8k total citations · 2 hit papers
418 papers, 9.1k citations indexed

About

Kôichi Hayashi is a scholar working on Geophysics, Cardiology and Cardiovascular Medicine and Ocean Engineering. According to data from OpenAlex, Kôichi Hayashi has authored 418 papers receiving a total of 9.1k indexed citations (citations by other indexed papers that have themselves been cited), including 86 papers in Geophysics, 63 papers in Cardiology and Cardiovascular Medicine and 57 papers in Ocean Engineering. Recurrent topics in Kôichi Hayashi's work include Seismic Waves and Analysis (82 papers), Seismic Imaging and Inversion Techniques (41 papers) and Nitric Oxide and Endothelin Effects (37 papers). Kôichi Hayashi is often cited by papers focused on Seismic Waves and Analysis (82 papers), Seismic Imaging and Inversion Techniques (41 papers) and Nitric Oxide and Endothelin Effects (37 papers). Kôichi Hayashi collaborates with scholars based in Japan, United States and India. Kôichi Hayashi's co-authors include Takao Saruta, Shu Wakino, Murray Epstein, Rodger Loutzenhiser, Yoshihito Kawamura, Eiji Abe, Akihisa Inoue, Koichiro Homma, Hiroshi Itoh and Kazuhiro Hasegawa and has published in prestigious journals such as Journal of the American Chemical Society, Journal of Biological Chemistry and Nature Medicine.

In The Last Decade

Kôichi Hayashi

381 papers receiving 8.8k citations

Hit Papers

align trajectories

What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the same subfield and year (this is the minimum needed to enter the top 1%, not the average within it), or reaches the top citation threshold in at least one of its specific research topics.

Long-period ordered structure in a high-strength nanocrystalline Mg-1 at% Zn-2 at% Y alloy studied by atomic-resolution Z-contrast STEM

2002 624 citations Kôichi Hayashi et al. profile →
Guidelines for the good practice of surface wave analysis: a product of the InterPACIFIC project

2017 352 citations Michael Asten, Cécile Cornou et al. profile →

Peers

Countries citing papers authored by Kôichi Hayashi

Since Specialization

Citations

This map shows the geographic impact of Kôichi Hayashi's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Kôichi Hayashi with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Kôichi Hayashi more than expected).

Fields of papers citing papers by Kôichi Hayashi

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Kôichi Hayashi. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Kôichi Hayashi. The network helps show where Kôichi Hayashi may publish in the future.

Co-authorship network of co-authors of Kôichi Hayashi

This figure shows the co-authorship network connecting the top 25 collaborators of Kôichi Hayashi. A scholar is included among the top collaborators of Kôichi Hayashi based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with Kôichi Hayashi. Kôichi Hayashi is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

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20 of 20 papers shown

#	Work	Indexed citations
1	SGLT2 Inhibitors Modify Fibrosis-4 Index and Mitigate the Development of DKD: Role of Background Antidiabetic Drugs 2025 ·Journal of the Endocrine Society ·(unknown), Kôichi Hayashi, K Kitamura, (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), Shigeki Fujitani, Toshihiko Suzuki	1
2	Impact of dynamic parameter of trends in vital signs on the prediction of serious events in hospitalized patients -a retrospective observational study 2024 ·Resuscitation Plus ·(unknown), (unknown), Takaki Naito, Zoie Shui-Yee Wong, Toru Yoshida, Kôichi Hayashi, Shigeki Fujitani	2
3	Atomic and Electronic Structures on a Mordenite Zeolite 2023 ·e-Journal of Surface Science and Nanotechnology ·Shinya Hosokawa, Hitoshi Sato, Yasuhisa Tezuka, Jun-ichi Adachi, Koji Kimura, Kôichi Hayashi, Shinji Kohara, Hiroo Tajiri, Kentaro Kobayashi, (unknown), Fuyuki Shimojo	0
4	Single Crystal Growth with Flux Method and Local Structure Analysis around Fe Using X-ray Fluorescence Holography for Multiferroic Pb(Fe<sub>1/2</sub>Ta<sub>1/2</sub>)O<sub>3</sub> 2023 ·e-Journal of Surface Science and Nanotechnology ·(unknown), Koji Kimura, Masato Maruyama, Naohisa Happo, Toru Asaka, Makoto Iwata, T. Matsushita, Kôichi Hayashi	1
5	Higher Intake of Vegetable Protein and Lower Intake of Animal Fats Reduce the Incidence of Diabetes in Non-Drinking Males: A Prospective Epidemiological Analysis of the Shika Study 2023 ·Nutrients ·(unknown), Hiromasa Tsujiguchi, Masaharu Nakamura, Kôichi Hayashi, Akinori Hara, Keita Suzuki, Sakae Miyagi, Takayuki Kannon, (unknown), (unknown), Yasuhiro Kambayashi, Yukari Shimizu, (unknown), (unknown), Fumihiko Suzuki, Hirohito Tsuboi, Atsushi Tajima, Hiroyuki Nakamura	2
6	Microtremor array method using spatial autocorrelation analysis of Rayleigh-wave data 2022 ·Journal of Seismology ·Kôichi Hayashi, Michael Asten, William J. Stephenson, Cécile Cornou, Manuel Hobiger, Marco Pilz, Hiroaki Yamanaka	26
7	Relationship between Vitamin Intake and Resilience Based on Sex in Middle-Aged and Older Japanese Adults: Results of the Shika Study 2022 ·Nutrients ·(unknown), Fumihiko Suzuki, Hiromasa Tsujiguchi, Akinori Hara, Takayuki Kannon, Sakae Miyagi, Keita Suzuki, Masaharu Nakamura, (unknown), (unknown), Hirohito Tsuboi, Yukari Shimizu, Thao Thi Thu Nguyen, (unknown), Y. Ono, Kôichi Hayashi, Atsushi Tajima, Hiroyuki Nakamura	2
8	Comparison of V S 30 and f 0 values from single station earthquake-to-microtremor ratio (EMR) and multi-station array-based site characterization methods 2020 ·AGU Fall Meeting Abstracts ·Alan Yong, (unknown), (unknown), Hiroshi Kawase, J. B. Fletcher, Kôichi Hayashi, Andrew J. Martin, A. C. Grant	1
9	Application of 2D ambient noise tomography to levee safety assessment in New Orleans 2018 ·The Leading Edge ·Kôichi Hayashi, Juan M. Lorenzo, (unknown)	5
10	Influence of Installation Angle on Damping Force of Damper Using a Particle Assemblage 2013 ·Jikken rikigaku ·Kôichi Hayashi, Yasushi Ido, (unknown)	1
11	Blind Test of Methods for Obtaining 2-D Near-Surface Seismic Velocity Models from First-Arrival Traveltimes 2013 ·Journal of Environmental and Engineering Geophysics ·C. A. Zelt, Seth S. Haines, Michael H. Powers, Jacob R. Sheehan, (unknown), (unknown), Kôichi Hayashi, (unknown), Hua‐Wei Zhou, Bethany L. Burton, (unknown), (unknown), William E. Doll	27
12	Influence of Projectile Material Properties on Crater Size and Ejecta of Thick Aluminum Alloy 6061-T6 Targets in Hypervelocity Impact 2012 ·Jikken rikigaku ·Masahiro Nishida, Shinji Yamamoto, Kôichi Hayashi, Sunao Hasegawa	6
13	Site investigation by surface-wave method and micro-tremor array measurements at central Anamizu, Ishikawa Prefecture 2008 ·BUTSURI-TANSA(Geophysical Exploration) ·Kôichi Hayashi, (unknown), (unknown), Tomio Inazaki, (unknown)	4
14	Role of Asymmetric Dimethylarginine in Vascular Injury in Transgenic Mice Overexpressing Dimethylarginie Dimethylaminohydrolase 2 2007 ·Circulation Research ·Kazuhiro Hasegawa, Shu Wakino, Satoru Tatematsu, Kyoko Yoshioka, Koichiro Homma, Naoki Sugano, Masumi Kimoto, Kôichi Hayashi, Hiroshi Itoh	105
15	EVALUATION OF MOTION AMPLIFICATION OF SMALL EARTH DAM BY SURFACE WAVE SURVEY AND MICROTREMOR MEASUREMENT 2007 ·PROCEEDINGS OF THE JSCE EARTHQUAKE ENGINEERING SYMPOSIUM ·(unknown), Shuichi Hasegawa, Minoru Yamanaka, (unknown), Kôichi Hayashi	1
16	A surface wave method using Land Streamers 2003 ·Kôichi Hayashi, Satoshi Okada, Haruhiko Suzuki, Tomio Inazaki	5
17	Relaxation-Based Algorithms for Bipolar Circuit Analysis (Special Section of Papers Selected from JTC-CSCC'93) 1994 ·IEICE Transactions on Fundamentals of Electronics Communications and Computer Sciences ·Masaki Ishida, Kôichi Hayashi, Masakatsu Nishigaki, Hideki Asai	1
18	Relaxation-Based Algorithms for Bipolar Circuit Analysis 1993 ·IEICE Transactions on Fundamentals of Electronics Communications and Computer Sciences ·Masaki Ishida, Kôichi Hayashi, (unknown), Hideki Asai	1
19	Numerical Stability and Multirate Effect in Waveform Relaxation Algorithm with Under Relaxation Technique 1991 ·International Symposium on Circuits and Systems ·Kôichi Hayashi, Hideki Asai	1
20	Studies on Pulmonary Circulation. Part 2. Pulmonary Capillary and Pulmonary Arterial Pressures, and Findings of Biopsy of the Lung in Mitral Valvular Disease(Proceedings of the 24th Annual Meeting The Japanese Circulation Society [Part II]) 1960 ·Japanese Circulation Journal-english Edition ·Masato Maekawa, Y. Ogata, (unknown), C Kawai, (unknown), Y. Morita, (unknown), (unknown), Akira Wakabayashi, K. Kawamura, (unknown), Kôichi Hayashi	1

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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